target Q:50!!!

I don't think anybody knows for sure--your score depends on which questions you miss, not just on how many you miss. I missed four questions on a GMATPrep test once, and my score was (surprisingly) still a 51... I would imagine that you could get somewhere between four and ten questions wrong and still get a 50 (depending on which questions you miss), but that's just an educated guess.

i am managing 2 get the first 10-12 questions right thereafter a few wrong ...
roughly how many questions come from probability n combinations ??

kc.q8ii wrote:i am managing 2 get the first 10-12 questions right thereafter a few wrong ...
roughly how many questions come from probability n combinations ??

Answering first 10-12 qns right is just a myth. For evidence, you can search for Eric's article in BTG.

Reg P&C, i'm hearing that people are getting 2-4 qns these days. When i wrote last July, i didn't get a single question on these topics. The trend is changing now. I guess the test makers are looking forward to test the candidates in these topics more often now.

kc.q8ii wrote:how many questions maximum can i get wrong n still score a 50???

As stated above, it depends on the difficult of the questions. But something between 6 and 9 questions can give you a 50.